LM3205SD-2In StockTexas Instruments
LM3205SD-2 is a current-mode PWM step-down DC-DC converter from Texas Instruments. It accepts 2.7V to 5.5V input and delivers a fixed 2V or adjustable 0.8V–3.6V output. Ideal for portable devices, RF power amplifiers, and battery-powered applications requiring compact, efficient power regulation.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- LM3205SD-2 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -30.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control for fast transient response and inherent cycle-by-cycle current limiting
- Wide input voltage range: 2.7V to 5.5V — compatible with single-cell Li-Ion and multi-cell alkaline batteries
- Fixed 2V output with adjustable option from 0.8V to 3.6V for flexible system design
- Ultra-compact 10-pin MSOP package minimizes PCB footprint in space-constrained applications
- Optimized for portable and RF applications with high efficiency at light loads
Applications
The LM3205SD-2 is designed for portable consumer electronics such as smartphones, tablets, and handheld devices where efficient battery power conversion is critical. It is well suited for RF power amplifier supply rails and wireless communication modules that demand stable, low-noise regulated voltage. Its compact package and wide input range also make it attractive for IoT edge nodes, wearables, and other battery-operated embedded systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | ALSO HAS VARIABLE OUTPUT VOLTAGE FROM 0.8V TO 3.6V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 3.6V |
| JESD-30 Code | S-PDSO-N10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 1.2A |
| Output Voltage-Max | 3.6V |
| Output Voltage-Min | 0.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2300kHz |
| Technology | CMOS |
| Temperature Grade | OTHER |
| Terminal Finish | TIN |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the LM3205SD-2?
The LM3205SD-2 accepts an input voltage from 2.7V to 5.5V, with a nominal operating voltage of 3.6V. This range makes it compatible with single-cell Li-Ion batteries as well as regulated 5V supply rails commonly found in portable and consumer electronics designs.
What output voltages does the LM3205SD-2 support?
The LM3205SD-2 provides a fixed 2V output in its default configuration and also supports an adjustable output voltage ranging from 0.8V to 3.6V. This dual capability allows engineers to use a single device for multiple supply rails within the same system.
What control method does the LM3205SD-2 use?
The LM3205SD-2 employs current-mode pulse width modulation (PWM) control. This technique provides fast transient response, inherent cycle-by-cycle current limiting for overcurrent protection, and simplified loop compensation compared to voltage-mode control.
What package does the LM3205SD-2 come in?
The LM3205SD-2 is available in a 10-pin MSOP (Mini Small Outline Package) surface-mount package. This compact footprint is ideal for space-constrained PCB layouts in portable devices, wearables, and RF front-end modules.
What are typical applications for the LM3205SD-2?
Typical applications include RF power amplifier supply regulation, smartphone and tablet power management, IoT sensor nodes, wearable electronics, and any battery-powered system requiring an efficient, compact step-down voltage regulator with adjustable or fixed output.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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